LG GW520 - Power ON;OFF

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. BB Circuit Technical brief
GW520 service manual
3.4. Power ON/OFF
[Figure 3.4-1] Remote power on and End-key power on circuit
Voltage level of PWRON pin is high before push the END_KEY button.
If push the END_KEY button, voltage level of PWRON pin is changed from high to low.
ON_OFF1 is a power-on input for SM-POWER3 with active low edge.
ON_OFF2 is for power off alarm clock.
END
ADI RPWRON(H)
2V11_RTC
R208 100K
2
56
31
4
Q200
EQBN0013701
EMX18
R220
DNI
R205
100K
R204
100K
R221
100K
DNI
R222
R201 0
DNI
R223
R215
10K
0R207
0R202
0
R216
KEY_ROW5
KEY_COL7
RPWRON_DBB
RPWRON
END_KEY
RPWRON_EN
RPWRON
PWRON
END_KEY
R203
DNI
R219 100K
2V62_VIO
C206 2.2u
2.2uC205
L3
WDOG
L1
VSD2
VIO
A11 A10
VPLL
B10
TXONPA
VDDPLLIO
B9 J5
RESOURCE_CRTL
K5
ON_OFF1
K4 L4
ON_OFF2
ON_OFF_OUT
L5 J4
OUTPORT
POWER_ON
K3
PUMS1
A1 B4
PUMS2 PUMS3
B11
FLASH_ON
C9
A9
FLASH_SHINK
K6
I2C_DAT
I2C_INT
1V35_VPLL
TP200
R200
27K
VBAT
DNIR214
C204 1u
4.7KR212
DNIR211
VBAT
DNIR210
4.7KR213
RPWRON_EN _PPR PWRON
RTC_OUT
WDOG RESOURCE_CTRL
QWERTY_KEY_EN
QWERTY_KEY_BL
I2C1_SDA
SPOWER_INT
SEND MULTI END
VBAT
SEND
VA80 6
varistor
ENDMULTI
END_KEY
KEY_COL6
KEY_COL5
KEY_ROW5
RTC ALARM ON
0.1u
R203
DNI
C201
R219 100K
2V62_VIO
C206 2.2u
2.2uC205
T
VBAT
2
.
2uC203
VSS_MONO
C7 L3
WDOG
L1
VSD2
VDD_MONO
B7
VIO
A11 A10
VPLL
C8
VREF
A5
VREFEX_M
B10
TXONPA
VDDPLLIO
B9 J5
RESOURCE_CRTL
RREF
B8 K5 C5
MONO_INN
B6
MONO_INP
A6
MONO_OUTN
A7
MONO_OUTP
ON_OFF1
K4 L4
ON_OFF2
ON_OFF_OUT
L5 J4
OUTPORT
POWER_ON
K3
PUMS1
A1 B4
PUMS2 PUMS3
B11
FLASH_ON
C9 A9
FLASH_SHINK
I2C_CLK
J7 K6
I2C_DAT
I2C_INT
1V35_VPLL
TP200
C208
1u
R218 100K
R200
27K
VBAT
DNIR214
C204 1u
4.7KR212
C207 0.1u
DNIR211
VBAT
DNIR210
4.7KR213
RPWRON_EN _PPR PWRON
RTC_OUT
WDOG RESOURCE_CTRL
QWERTY_KEY_EN
QWERTY_KEY_BL
I2C1_SCL I2C1_SDA
SPOWER_INT